Machine for making abrading-disks.



' Nn. 684,568. y Patented oct. I5, wol.

' F. N. GARDNER A. s. cAnAMAN.

MACHINE FR MAKING ABRADING DISKS.

(Applicaeion med Nov. so, 1900.)

(No Model.) 4 Sheets--Shet I.

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I/ 'ff/ Z114 uw -I Zfzf (iA Jl if i :h nil/l Patented Oct. I5, |90I.

F. N. GARDNER & A. B. cADMAN. MACHINE FOR MAKING ABRDlNGlSKS.

(Application led Nov. 80, 1900.) um Model.) 4 Sheng-sheet 2.

No. 684,568. 4 Patented 0st. l5, |901.

F. N. GARDNER & A. B. CADMAN.

MACHINE FOR MAKING ABBADING DISKS.

(Application fxled Nov. 30, 1900.) (No Model.) 4 Sheets-Sheet 3.

N0. 684,568. Patented UGL I5, I90I.

F. N. GARDNER A. B. CADIVIAN.

MACHINE FUR MAKING ABRADING DISKS.

(Application led. Nov. 30, 1900.)

(No Model.) 4 Sheets--Sheet 4.

limitan STATES FREDERICK N. GARDNER AND ADDI BENJIMAN CONSIN, ASSIGNORSTO CHARLES H. BESLY,

CADMAN, OF BELOI'I, VIS- OF CHICAGO, ILLINOIS.

MACHINE FOR MAKING ABRADlNG-DISKS.

'SPECJIFCATON' forming part of Letters Patent No. 684,568, datedlOctober 15, 1901. `Application filed November 30, 1900. Serial No.38.148. \No model.)

T all whom, t may concer-zz:

Be it known that we, FREDERICK N. GARD- NER and ADDI BENJIMAN OADMAN, ofBeloit, in the county of Rock and State of Wisconsin, have inventedcertain newand useful Improvements in Machines for MakingAbrading-Disks; and we do hereby declare that the following is a full,clear, and exact description thereof, reference being had to the ac- 1ocompanylng drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to a novel machine for effecting one step in theprocess of manufacturing grinding or abrading disks of that kindconsisting of a sheet or disk of paperor like material, on one faceofwhich is applied abrading material, such as emery or pulverizedcorundum, in a continuous line or strip zo arranged generally in aspiral form, with the turns or convolutions thereof parallelrwith eachother, and which is made to adhere to the disk by means of glue or likeadhesive substance previously applied to the disk.

Said strip is disposed on the sheet or disk in a manner to providebetween the turns or convolutions of the strip clearance-grooves ordepressions of a width to accommodate the grindings of the disk.

3o The machine here shown is designed to apn ply the glue to the disk'in a spiral line or strip preparatory to applying the corundum thereto.

The invention consists in the matters hereinafter set forth, and morepartcularlypointed out in the appended claims.

In the drawings, Figure l is a side elevation of a machine for carryingoutouriuvention, showing some of the parts in section.

4o Fig. 1 is a fragmentary sectional detail of the discharge-pipe of theglue-pot and associated parts. Fig. 2 is a plan View of the machine.Fig. 3 is a horizontal fragmentary section on line 3 3 of Fig. 1. Fig.'tis an end view of the machine as seen from the front end of themachine. Fig. 5 is a fragmentary vertical section on the line 5 5 ofFig. l. Fig. 5f is a vertical section on line 5a 5 of Fig. 3.

Fig. 6 is an end view of the nozzlesupport- 5o ing device and thevalve-actuating mechanism t'or said nozzle. Fig. 7 is a view of saidnozzle-supporting device and valve-actuating mechanism looking in thedirection indicated by the arrow in connection with Fig. G. Fig.

8 is a partial plan View of said parts looking 5@ in the directionindicated by the arrow on Fig. 6. Fig. 9 is a transverse section takenon line 9 9 of Fig. 7. Fig. 10 is a longitudinal section on line 10 10of Fig. S. Fig. 1l is a longitudinal section on line l1 11 of Fig. 6o10. Figs. 12, 13, and 14 are details of .a modi-` ed form of nozzlewhich supplies the glue to the disk.

As shown in said drawings, and referring more particularly to Figs. l to5, inclusive, A designates the base-plate of the machine, which isprovided with suitable supportinglegs and at one end with a standard A',rising therefrom. Within said standard is mounted a rotative shaft B,which carries at its upper 7o end a horizontal disk or plate Bl, whichlatter supports the sheet or disk to which the abrading material is tobe applied.

C designates a glue-discharging nozzle, which is located above the diskand has a bodily movement in a direction toward and from the centerthereof. Said nozzle may have one or more discharge-orifices. The nozzleis attached to and moves with a head D, which head is constructed tosupport a 8o valve and valve-actuating mechanism, by which a supply ofglue to the nozzle is controlled.

E designates aglue-pot located above the level of said nozzle andconnected with the head and therethrough with the nozzle by means of aflexible pipe EC The glue-pot is connected with an air-pressure deviceto control the discharge of glue therefrom, and said pot is madeair-tight, so that the required 9o pressure may be maintained therein.The head D is supported on the outer end of an upwardly and laterallycurved arm F. Said arm F is supported at its lower end upon a stand G,located below the level of the disk v B', and the arm is movable towardand from the disk B' in a path located in the plane of the central axisof said disk, so that when moved it will carry the nozzle C thereontoward and from the center of the disk. Roloo `tary movement is given tothe disk B through the medium of a friction-wheel I-I, which is altixedto a rotative shaft H', mounted-at one end in the upper end of astandard H2 and at its other end in a bracket H3, supported upon thestand G. Said shaft H' is rotated through the medium of a frictiondriving mechanism consisting of a disk H4, fixed rigidly to the shaft,and a friction-disk H5, which rotates on an axis perpendicular to theaxis of the shaft I-I and is adapted to engage at its periphery the faceof the disk H4. Said disk H5 is mounted on a rotative shaft H6 and isadjustable endwise on said shaft, so that it may engage the disk H4at-varying distances from its center, and the speed of the shaft H maybe thereby changed as desired. The shaft I-I6 is mounted in the upperends of arms H7, which are pivoted at their lower ends to swing towardand away from the disk H4, and the disk H5 is held yieldinglyagainst thedisk H4 by means of spiral compressionsprings H8, connected at theirouter ends with said arms H7 and at their. inner ends with the standardH2. The shaft H may be driven through the medium of a pulley locatedoutside of one of said arms H7. One of the arms H7 is provided with arigidlyprojecting part or arm H42, which is adapted `to be connected bya rod H*4 to a foot lever or treadle, (not shown,) by which the disk H5is moved away from the disk H4-to stop the machine.

The construction by which the arm F is moved toward and from the disk Bis in this instance made as follows: Said arm is attached at its lowerend to a longitudinallysliding carriage G2, which fits and slides in theupper part of the stand G, as shown in Fig. 5, said carriage and standhaving interfitting engagement to hold the former in place. Saidcarriage is provided with a rigid depending arm G12, which is aperturedat its lower end to receive an interiorlyscrewthreaded collar G4, thecollar being made fast to the arm by means of a set-screw, as shown inFigs. 1 and 5.`

I designates a rotative screw-shaft which receives motion from the shaftB and is journaled at one end in the rear leg G4 of the stand G and atits other end in bearing-arms a, projecting from the standard A. Saidrotative screw-shaft I is operatively connected with the shaft B of thedisk B through the medium of a reversing-gear comprising beveled pinionsI' 12, which are loosely mounted on said shaft and project between thebearing-arms a, a bevel-pinion B2, mounted on the lower'end of thedisk-shaft B and meshing with the pinions I' I2, and a clutch collar orring I3, which is non-rotatively mounted on the shaft I between thebeveled pinions I I2. The proximate faces of the pinions I' I2 and theclutch-collar I3 are provided with interlocking projections andrecesses, and said collar is adapted to be moved into engagement witheither one of said pinions and lock the same to the shaft, at which timethe other pinion rotates freely on thc shaft. The clutchcollarisaotuated by means of a lever I4, pivoted on a block d' to swing in ahorizontal plane and engaging at its inner end a groove in said collar.With this construction when power is applied to rot-ate the disk B' saiddisk will, through the shaft B and pinion B2 at the end thereof,transmit rotary motion through either one of the pinions I.' I2 thereofwhich is locked in the shaft by the clutch mechanism described to thescrew-shaft I and cause movement of the slide G2 and arm F, connectedtherewith, thereby moving the glue discharging nozzle inwardly oroutwardly with respect to the disk, depending on the direction of therotation. Saidlever I4 vibrates in a guide-loop I5, attached to thebed-plate, as shown in Figs. 3, 4, and 5a, and said loop is providedwith a spring-pressed pin t', as shown in Fig. 5?, adapted to engageeither one of three depressions or notches in the upper surface of thelever to hold the 1ever at either limit of its throw, with the clutchengaged with one of the pinions I I2, or in an intermediate position,with the clutch disengaged from both pinions. Said notches have slopingsides, so as to permit the lever to be swungl without first raising thepin, while at the same time holding the lever against accidentaldisplacement. Desirably said lever is automatically swung from eitherlimit of its movement to its intermediate position at the time thenozzle reaches the end of its travel in either direction, and therebystop rotation of the shaft I and parts actuated thereby. A convenientconstruction for effeet-ing this result is made as follows: I6designates an endwise reciprocatory rofl which slides in guide-lugs t" ton the bed-plate and is disposed parallel to the path of travel of thecarriage G2 at one side thereof. Said rod is pivotally connected at oneend with the lever I4 and is provided at laterally-separated pointsvthereon with collars i212, adapted to be severally engaged by alaterally-extending arm G6, affixed tothe carriage G2 or a part movingtherewith. Said collars 2 are adjustable longitudinally on the rod andare adapted to be set on the rod in position to be struck by the arm G6at the time it is desired to stop the travel of the nozzle at eitherlimit of said travel. Such engagement of the arm with the collars 112acts only to move the clutch into its intermediate position,and whenmovement of the nozzle in the opposite direction is desired the clutchVwill be given further movement by hand.

It will be observed that by reason of the fact that the nozzle and diskare connected by positively-operating gear connections the relation of'the rotative and radial velocities of the disk and nozzle, respectively,will always be maintained, notwithstanding the variations of speed ofthe disk. It follows,

therefore, that the distances between the turns or convolutious of thespiral' strip of glue applied by the nozzle will remain constant.

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If the disk B' be given a constant rate of speed in its rotation and thenozzle C be moved radially inwardly and outwardly at a uniform speed,the glue discharged from said nozzle would not be uniformly applied tothe sheet supported on said disk, it being obvious that in such case theouter part of the disk would have a greater surface speed than the innerpart, and the `glue would be applied to said outer part less thicklythan at the inner part. Means are therefore provided for imparting tothe disk B a variable speed, whereby the surface of the disk locatedimmediately beneath the nozzle will always move at such velocity withrespect to the radial travel of the nozzle as to apply the glueuniformly to the disk. As one means of accomplishing this result thefriction-pulley H is movable endwise on the shaft H, and thebearingbracket H2, in which said pulley is mounted, is attached to thecarriage G2, to which the lower end of the arm F, carrying the nozzle,is attached. The pulley His therefore moved radially toward and from thecenter of the disk in contact with the lower surface thereof and impartsa variable velocity thereto, said velocity decreasing as the pulleymoves toward the circumference of the disk. rPhe pulley H is locatedvertically beneath the nozzle C and by reason of their connection withthe slide Gf2 retain this vertical relation throughout their radialmovement. It will be seen, there fore, that the part of the disk locatedvertically beneath the nozzle C is always moved at the same surfacespeed, so that the glue discharged from said nozzle is applied uniformlyto the sheet supported on the disk.

The head D has swiveling connection with the arm F in a manner to permitit and the nozzle carried thereby to be swung upwardly away from thedisk when it is desired to place a sheet upon the disk or remove ittherefrom. Said head also supports a valve and valve-actuating mechanismwhich control the flow of glue through the nozzle. Said head and themeans by which it is supported are made as follows: D' D2 designate twotubular sections of a two-part sleeve which have screw-threadedconnection end to end, one end of the part D fitting within the adjacentend of the part D2. Said sections D D2 are of uniform diameterthroughout, constituting, in effect, a single sleeve. Said two-partsleeve is connected with the arm F through the medium of alaterally-eXtending bearingbracket F', the bracket iitting loosely overthe part D' of said sleeve between the enlarged end Vof the part D2 andan enlargement or shoulder d at the opposite end of the part D. To theouter end of said two-part sleeve is attached the head D, (see Figs. Gand 9,) which is of open construction and consists of laterallyseparatedvertically-disposed members D3 D4, an end memberD5,and two transversemembersDGDl, located between the ends of the head and extending betweensaid side members at the up1 per and lower edges thereof. The nozzle Chas screw-threaded engagement at its upper end with a casing D8, whichlatter is provided with an arm d', by which it is connected with adownwardly-projecting lug or arm d2 on the side member D3 of the head.Said casing is provided with a nipple cl3, with which the lower end ofthe flexible pipe E', leading from the glue -pot, is attached. d4, Figs.9 and l0, designates a conical valve located within said casing DS andadapted to engage a seat in said casing to close the oritice with whichthe nozzle C is connected. Said valve is provided with a stem d5, whichpasses outwardly through a hollow sleeve D9, forming part of saidcasing, said sleeve having screw-threaded connection with an aperture inthe main part of the casing which is located opposite to the aperturewith which the nozzle C is engaged. Said valve is held normally openedby means of a spiral expansion-spring d, located within an enlarged partor recess in the outer end of the sleeve D9 and bearing at one endagainst the bottom of the said recess and at its outer end against ahead cZ7 on the outer end of the stem. Means are provided forautomatically closing said valve at the time when the nozzle reacheseither li mit of its movement, it being of course desirable to stop theflow of the liquid glue at this time. The construction by which suchautomatic closing of the valve is effected is made as follows: J, Figs.l, 2, 9, and 10, designates an endwisereciprocatory rod, which ismounted at one end in the upper end of the standard K and at its otherend in the head D. Said rod projects at its outer end slightly beyondthe head. The rod has guiding engagement in the two-part sleeve withhollow plugs d8 d, which latter have screw-threaded engagement with theopposite ends of the sections D D2 of the two-part sleeve. Within saidsections of the two-part sleeve and surrounding the rod are locatedspiral expansionsprings J J2, which are interposed between the plugs d8dg, respectively, and a collarD, attached to the rod midway of thesleeve, and which permit the rod to move endwise in eitherdirection,while tending to hold it yieldingly in its intermediate orcentral position. Attached to the actuatingrod J at the outer end ofsaid two-part sleeve is the cam-block J4, which is attached to thesleeve, so as to move therewith,and provided with a V-shaped cam-notchjon one side thereof. Surrounding said cam-block is a yoke or ring havingguidingv projections or stems L and L3, the former of which passesthrough a bearingaperture in the lower transverse member D7 of the headand the latter through an oppositelydocated bearing-aperture of theupper transverse member Dof the head. Said yoke or ringis provided witha projection L', adapted for engagement with the cam-block, and is heldyieldingly engaged with the cam by means of a spring Z5, surrounding thestem L3 and interposed between the head and a nut or collar Z4 on theouter end of the stem. The

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part L of the yoke constiutes a plunger,which is adapted for operativeconnection with the valve-stem. The plunger is depressed to'close thevalve by moving the block endWise and bringing an unnotched part thereofin contact with the projecting part L of the plunger. The same resultmay be secured by rotation of the block. As herein shown, said operativeconnection is a yielding one and is made as follows: Said plunger ismade tubular and is provided centrally thereof with a pin L2, having onits inner end a head Z, adapted for engagement with the part L of theplunger, and at its other end with a head Z', Which engages the head Z7of the valvestem. Said pin L2 is surrounded at its end adjacent to thehead Z by a sliding ring Z2, having an annular flange which incloses thehead Z thereof and adapted for engagement with an annular internalshoulder in the bore of the plunger. Z3 designates a spiral expansionspring surrounding the pin and `interposed between said ring and thehead Z of the pin and acts to hold the ring against the head Z thereof.When the projection L' of the plunger L engages the deepest part of thecam-notch, a space is left between the head Z of the pin L2 and saidpart L of the plunger, and When said cam-block is moved to bring anuunotched part thereof in contact with said projection of the plunger itfirst depresscs the plunger L against the action of the spring Z2 untilthe part L is brought against the head Z of the pin, when furthermovement of the plunger acts directly through the pin and the valve-stemto close the valve.

It will be observed that the plunger L, the pin L2 therein, and the stemZ5 of the valve constitute', in effect, a continuous operativeconnection between the cam-block J 4 and the valve to close the latter.The yielding connection afforded by the spring Z3 is provided in orderto obviate the necessity of closely fitting said parts and at the sametime insuring the proper closure of the valve. In order to prevent saidplunger rotating about its axis, one of the arms of the yoke is providedwith a guide-slot Z", which is engaged by a setscrew passing through theside member D4 of the head and projecting into said slot.

The endwise reciprocation of the rod J, and consequent closure of thevalve through the action of the cam-block on the plunger L, is producedat each end of the travel of the nozzle C. For this purpose said rod isprovided at longitudinally-separated parts with collars J 5 J6, locatedon opposite sides of the standard K and one adapted for contact with theupper end of said standard when the nozzle is at one limit of itsmovement and the other adapted for contact with the opposite side of thestandard when the nozzle is at the other limit of its movement. Wheneither of said collars engages said standard, the rod is movedlongitudinally against the tension of one of the springs J J2 to bringthe caniceases notchj of the block J4 out of line with the projection Lof the plunger and said projecting part of the plunger against theunnotched part of said collar. This causes depression of the plunger andthe closing of the valve. nozzle and friction-pulley is changed byactuation of the shaft I, the collar J5 or J6, which has just beenengaged by the standard J, moves out of contact with said standard, andthe spring J or J2, just placed under compression, acts to return therod to its central position, with the cam-groove j of the block J4 inline with the projection of the plunger L, so that the valve may againopen.

In the operation of the machine the glue will be applied to one sheetduring the radial travel of the nozzle from the center to the circumference of the disk, or vice versa. At the end of the travel of thenozzle in either direction the nozzle Will be thrown upwardly from thedisk by reason of its hinged connectiouWith the arm F and the sheet towhich the glue has been applied removed from the plate B and a blanksheet placed thereon, to which glue will be applied in the return travelof the nozzle.

Means are provided for closing the gluecontrolling valve at the timewhen the nozzle is intermediate in its limits of movement, such closingmeans being employed when the machine is out of use and to stop the flowof glue at any point in the path of travel of the nozzle. Theconstruction by which the said closure of the valve is effected 'is inthis instance made as follows: The actuating-rod J is rotatively mountedin the head D and is held normally from turning therein by means of acollar M, Figs. 6,7, l0, andll, Which is non-rotatively fixed to the rodoutside of said head and is adapted to be locked to the head by meanspreventing angular movement thereon. The inner part of said collar iscylindric and is located in an annular recess in the end member D5 ofthe head D, suri rounded by an annular flange d, extending laterallyfrom said head. Said collar is connected with said head by meanspermitting it to rotate about the aXis of the rod J-When the lockingmeans are released, but which prevent lateral detachment of the collarfrom the head. The connecting means consist in this instance ofset-screws 112, passing through the flange cZnand entering an annulargroove ,7'2 in the periphery of the part of the collar which issurrounded by said flange. The collar is splined to the shaft to permitthe shaft to slide endwise thereon, the means for locking said collarfrom rotation about the axis of the rod consisting in this instance of aspring-actuated bolt ,72, which passes through the flange du of said endmember of the frame and is adapted for engagement With sockets in thebottom of the annular groove 7'2 of the collar. are provided in thegroove and are located oppositely to each other, one adapted to be Whenthe direction of motion of the IOO IZO

Two of said sockets engaged by said bolt when the cam-notchj of theblock JI is on the side of the rod adjacent to the valve and the otherof which is adapted to be engaged by said bolt when the block is given ahalf-rotation and the carnnotch is rotated to the side of the rod remotefrom said valve.

The nozzle shown in the principal iigures is provided with a singledischarge-orifice and applies but a single spiral strip of glue.

In Figs. l2, 13, and 14 is shown a nozzle having threedischarge-orifices and capable of applying three spirals of glue at onetime. The nozzle therein shown consists of a hollow at shell having aninterior chamber C', as indicated in dotted lines in Figs. 12 and 13,and provided with a hollow nipple C2, which latter is screw-threadedforattachment to the valve-casing D8, as shown in Fig. 9. Said nozzle isprovided at its outer end with three discharge-orifices c c c, whichcommunicate with the interior chamber C' and are separated by partitionsc', of sufiicient width to produce the desired spaces between thc partsof' the spiral. It will be understood that in this form of nozzle thespeed of the nozzle toward and from the center of the disk will beproportionated to provide between the sets of spirals spaces equal tothe spaces between the spirals of each set.

The air-pressure device provided to maintain a constant pressure withinthe glue-pot, so that the glue will be discharged therefrom in uniformquantities, consists of an air-storage tank N, suitably located withrespect to the glue-pot and connected therewith by a valved pipe N,which enters through the u pper head thereof. Said storage-tank isprovided with an induction-pipe N2, adapted for connection with asuitable compressor. The tank is also provided with a blow-off or reliefvalve n and a pressure-gage n.

The glue-pot E, Fig. l, consists of an annular shell provided with topand bottom removable plates EZ which are held in place by clamping-rodsE4. Said rods have screwthreaded engagement with the margin of thebottom plate E3 outside of said shell and pass through the margin of theupper plate E2 and provided on their upper ends with thumbnuts e, bywhich the parts are clamped in place. Preferably the shell is providedwith guide-loops e', through which the clampingrods pass to hold thesame in place when the top-plate E2 has been removed. This constructionis provided to afford an air-tight receptacle.

In case it be desired tc apply heat to the glue within the pot thefollowing construction is used: The said pot is herein shown as locatedwithin a suitable shell or jacket which latter is adapted to be iilledwith water, within which the glue-pot is submerged, and said water isheated by means of a gas-burner E6 of familiar construction locatedimmediately beneath the bottom Wall E7 of the shell or jacket E5. Saidpot and jacket are supported on a horizontal plate ES, which may besuspended from any suitable overhead support by means of rods E, asshown in Fig. l. The pipe E', leading from said pot to thedischarge-nozzle, is connected at its upper end with a short rigid pipe62 Fig. l, which passes through said plate, the bottom wall E of thejacket, and the bottom plate of the pot. Said pipe has screw-threadedengagement with said bottom wall of the pot. As a means for providing aWater-tight joint between said pipe and the Water-jacket said pipe isscrew-threaded and is provided with two (.lamping-nuts e2 e4, the formerlocated above the bottom plate of the jacket E5 and the latter below thesupporting-plate E8 and bearing against the lower surface thereof. Saidnutet, as shown, has the form of a nipple, to which the pipe E isattached. Between then ut e3 and the bottom wall or plate ET of thewater-jacket is located a layer of snitable packing material e5, asshown more clearlyv in Fig. l, and which is compressed between said nutand bottom plate to prevent the passage of water between said parts.Said nut e3 will desirably be made of suitable diameter to afford anextended packing-surface between said parts. The burner E6 is protectedfrom side draft of air by means of a casing E10, connected with thesupportingplate ES, said casing having therein suitable air-openings toprovide the requisite quantity of air to the dame.

" IOO One of the principal advantages of the con.l

struction described is the ease and facility with Which the feed of theglue from the discharge-nozzle may be regulated so as to pro-` It willbe obvious thatv duce uniform work. different charges or batches of gluemay differ appreciably in consistency, and therefore Will not flowuniformly from the nozzle C. Such inequalities of flow may be correctedeither by varying the pressure withintliev glue-pot or the velocity ofthe disk B or by their conjoint regulation. The pressure in the pot willbe maintained at such a point that gravity will have little or no effecton the feed of the glue therefrom, so that practical uniformity of flowmay be maintained,

whether the pot be filled or almost empty.

Ve claim as our invention--V l. A machine for the purpose stated,comprising a rotative disk, and means for delivering liquid to a sheeton the disk embracing a discharge-nozzle, one of said parts namely, saiddisk or nozzle, having movement with respect to the other part in adirection lto carry the nozzle toward and from the center of the disk.

2. A machine for the purpose stated, coinprising a rotative disk and adischarge-nozzle, one of which is movable with respect to the other in adirection to carry the nozzle toward and from the center of the disk,and means operating to deliver a uniform layer of glue through thenozzle to a sheet on the disk.

3. A machine for the purpose stated, comprising a rotative disk and adischarge-nozzle, one of which is movable with respect to thc other inadirection to carry the nozzle toward and fromthe center of the disk,and means for imparting variable rotative speed to said disk.

4. A machine for the purpose stated, comprising a rotative disk and adischarge-nozzle, oneot' which is movable with respect to the other in adirection to carry the nozzle toward and from the center of the disk,and means for imparting to the nozzle variable speed during suchmovement.

5. A machine for the purpose stated, comprising a rotative disk and adischarge-nozzle, one of which is movable with respect to the other in adirection to carry the nozzle toward and from the center of the disk,and means im parting correspondingly variable speed to said disk andnozzle. Y

6. A machine for the purpose stated, comprising a rotative disk and adischarge-noz zle, one of which is movable with respect to the other ina direction t0 carry the nozzle toward and from the center of the disk,and means for rotating the disk constructed to maintain a constant speedin that part of the surface ot the disk in connection with which thenozzle is in operative relation at any time in its travel.

7. A machine for the purpose stated, comprising a rotative disk and adischarge-nozzie, one of which is movable with respect to the other in adirection to carry the nozzle toward and from the center ot' the disk,said movement being accelerated as the nozzle moves toward the center ofthe disk and retarded asitmovesoutwardlytherefromnneans for rotating thedisk constructed to maintain a constant speed in that part of thesurface of the disk in connection with which the nozzle is in operativerelation at any time duringv its travel.

prising a rotative disk and a discharge-nozzle, said parts beingrelatively movable in a direction to carry the nozzle toward and fromthe center ot' the disk, and means for rotating said disk andforimparting relative movement to said disk and nozzle.

9. A machine for the purpose stated, comprising a rot-ative disk, adischarge-nozzle movable toward and from the center of the disk, and arotative friction-wheel engaging said disk and movable radially thereonin unison with the movement of said nozzle.

10. A machine for the purpose stated, comprising a rotative disk, adischarge-nozzle movable toward and from the center of the disk, and arotative friction-wheel engaging the part of said disk opposite saidnozzle and movable in unison with the nozzle.

1l. A machine for the purpose stated, comprising a rotative disk, adischarge-nozzle, means for moving said nozzle toward and from thecenter of the disk, and means for rerversing the direction of movementof said nozzle.

12. A machine for the purpose stated, coinprsing a rotative disk, adischargenozzle, a friction-wheel engaging the disk to rotate the same,a sliding carriage with which the friction-wheel and nozzle areconnected to effect the movement of the same in unison toward and fromthe center of the disk, a rotative screw-shaft driven from the disk andconnected with the carriage to move the same, and means for reversingthe direction of rotation ot the said shaft.

13. A machine for the purpose stated, comprising a rotative disk, adischarge-nozzle, a friction-wheel engaging the disk to rotate the same,a sliding carriage with which the friction-wheel and nozzle areconnected to edect the movement of the same in unison toward and fromthe center of the disk, a rotative screw-shaft,laterally-separatedbevel-pinions loosely mounted on said shaft, a shaft concentric with thedisk provided with a bevel pinion which meshes with the pinions of thescrew-shaft, clutch mechanism for locking the loosely mounted pinionsseverally to the screw-shaft, and operative connections between thecarriage and screw-shaft.

14.- A machine for the purpose stated, coinprising a rotative disk and adischarge-noz` zle, said parts being relatively movable in a directionto carry the nozzle toward and from the center of the disk, and a valvefor controlling` the flow of glue through said nozzle.

l5. A machine for the purpose stated, comprising a rotative disk and adischarge-nozzle, said parts being relatively movable in a direction tocarry the nozzle toward and from the center of the disk, a valvecontrolling the iiow of glue through said nozzle, saidvalve beingnormally open, and means for closing the valve at both limits of themovement of the nozzle.

1G. A machine for the purpose stated, comprising a rotative disk and adischargefnozzle, said parts being relatively movable in a direction tocarry the nozzle toward and from the center of the disk, a valvecontrolling the flow ot glue through said nozzle, said valve beingnormally open, means for closing the valve at both limits of themovement of the nozzle, and means for closing the valve at pointsbetween said limits of movement.

17. A machine for the purpose stated, comprising a rotative disk and adischarge-noz'- zle, said parts beingrelatively movable in a directionto carry said nozzle toward and from the center of the disk, a valvemovable with the nozzle for controlling the iiow of glue therethrough,and means for actuating said valve, comprising a rod operativelyconnected with the valve, and means whereby said rod is actuated from astationary part of the machine.

18. A machine for the purpose set forth,- comprising a rotative disk anda discharge- IIO 684, ses

nozzle, said parts being relatively movable in a direction to carry saidnozzle toward and from the center of the disk, a valve movable with thenozzle for controlling the flow of glue therethrough, and means foractuating said valve at each limit of movement of the nozzle, comprisinga rod operatively connected at one end with the valve and movabletherewith, and separated stop-shoulders on said rod adapted forengagement with a stationary part of the machine, said stop-shouldersbeing adjustable longitudinally of the rod.

19. A device for the purpose stated, comprising a rotative disk and adischarge-nozzle, said parts being relatively movable in a direction tocarry said nozzle toward and from the center of the disk, a valvemovable with the nozzle for controlling the iiow of glue therethroughand having a stem extending transversely to the path of the nozzle, andmeans for actuating said valve, comprising a rod movable with the valveand having end- Wise-reciprocatory movement relativelythereto, a cam onthe rod, a plunger movable transversely to the rod engaging said cam andacting on the valve-stem, and means for actuating said rod.

20. A machine for the purpose stated, comprisin g a rotative disk and adischarge-nozzle, said parts being relatively movable in a direction tocarry the nozzle toward and from the center of the disk, a valve movablewith the nozzle for controlling the dow of glue therethrough, and meansfor actuating said valve comprising a rod movable with the valve andhaving endwise reeiprocatory movement relatively thereto, a cam-block onthe rod having on one side a cam-notch, a plunger for depressing thevalves, having yielding contact with said cam-block, and means foractuating said rod, said cam-block being rotative about the axis of therod to bring an unnotched part of the collar in contact with the plungerto hold the valve closed.

2l. A machine for the purpose stated, comprisin g a rotative disk and adischarge-nozzle, said parts being relatively movable in a direction tocarry the nozzle toward and from the center of the disk, acontrolling-valve for said nozzle, and means for actuating said valvecomprising a rod movable With the valve and having endwise-reciproeatory movement relatively thereto, a cam-block on the rodhaving on one side thereof a V-shaped camnotch, a plunger movabletransversely of the rod and which yieidingly engages said camblock,means for reciprocating said rod, said rod having rotative engagementWith its bearings Whereby the unnotched face of the collar may bebrought into engagement with the plunger, and means for locking said rodfiom rotative movementA 22. A machine for the purpose stated, comprisinga rotative disk and a discharge-nozzle, said parts being relativelymovable in a direction to carry the nozzle toward and from the center ofthe disk, a valve movable with the nozzle for controlling the iiow ofglue therethrough, a rotative head supporting the nozzle and ali'ordingmovement thereof t0- Ward and from the surface of the disk, and

through, a rotative head supporting the said nozzle, and means foractuating said. valve comprising a rod mounted concentricallywith saidhead and movable with the valve and having end Wise-reciprocatorymovement relatively thereto, a cam-block on the said rod, a plungermounted in the said head for actuating the valve, having yieldingContact with said cam-block, and means for actuating said rod.

24. A machine for the purpose stated, comprising a rotative disk and adischarge-nozzle, said parts being relatively movable in a direction tocarry the nozzle toward and from the center of the disk, a valve movablewith the nozzle for controlling the flow of glue therethrough, arotative head for supporting said nozzle to which the same is detachably secured, said valve being provided With an endwisemovablevalve-stem and a spring holding the valve open, and means for actuatingsaid valve comprising a rod movable with the valve, and havingendWise-reciproeatery movement relatively thereto, a camblock on therod, and a plunger mounted in said head and having yielding contact Withsaid cam-block, said plunger being provided with a part havingspring-pressed contact with the stem of said valve.

ICO

25. A machine for the purpose stated, com--l prising a rotative disk anda discharge-nozzle, said parts being relatively movable in a directionto carry the nozzle toward and from the center of the disk, a valvemovable with the nozzle for controlling the IioW of glue therethrough,and means for actuating said valve, comprising a rod which is bodilymovable with the valve and has endwise movement relatively thereto, acam-block on the rod having on one side thereof a V-shaped cam-notch,two springs acting on the rod. to maintain the said cam-block normallyin its central position, a plunger for actuating the valve havingyielding contact With said camblock, and means for actuating said rodembracing stops on the rod adapted for engagement with a part of themachine-frame 26. A machine for the purpose stated,I comprisin garotative disk and a discharge-nozzle,- one of said parts being radiallymovable in a direction to carry the nozzle toward and from the center ofthe disk, said nozzle being provided with a plurality of narrowhorizontally arranged discharge-orifices located side by s de. A

27. A machine for the purpose stated, com-v IIO zle carried by said headand provided with a Valve, means for automatically actuating said valve,means for giving reciprocatory motion 'to the carriage, and means frrotating said disk embracing a rotative friction-Wheel engaging the diskand movable with said carriage.

28. A machine for the purpose stated, comprising a machine frame, arotative disk mounted thereon, a sliding carriage provided with an armwhich overhangs said disk, a rotative head mounted on said arm, adischargenozzle mounted on said head and provided with acontrolling-valve, means for automatically actuating said valve, meansfor rotating the disk comprising a friction-Wheel which moves with thesaid carriage, and gearings for driving the said carriage through themedium of the disk embracing a reversing-gear, and means forautomatically actuating the said reversing-gear.

29. A machine for the purpose set forth, comprising a rotative disk anda dischargenozzle, one of said parts being relatively movable in adirection to carry the nozzle toward and from the center of the disk, aclosed gluepot in communication with said nozzle, and means for applyingpressure to the glue within the pot.

30. A machine for the purpose set forth, comprising a rotative disk anda dischargenozzle, one of said parts being relatively movable in adirection to carry the nozzle toward.

and from the center of the disk, a closed gluepot in communication withsaid nozzle, means for applying pressure to the glue Within the pot, andmeans for varying said pressure.

3l. A machine for the purpose set forth, comprising a rotative disk anda dischargenozzle, one of said parts being relatively movable in adirection to carry the nozzle toward and from the center of the disk, aclosed gluepot in communication with said nozzle, and means for applyingheat to the glue Within the pot.

32. A machine for the purpose set forth, comprising a rotative disk anda dischargenozzle, one of said parts being relatively movable in adirection to carry the nozzle toward and from the center of the disk, aglue-pot communicating with the nozzle, a jacket surrounding the pot andadapted to contain Water, and means for applying heat to said Water.

In testimony that We claim the foregoing as our invention We affix oursignatures, in presence of two Witnesses, this 9th day of November, A.D. 1900.

FREDERICK N. GARDNER. A. BENJIMAN CADMAN. lVitnesses:

CHAs. KENDALL, L. W. KENDALL.

